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Updated: May 3, 2026
10:48
Differentiation of a Human Neural Stem Cell Line on Three Dimensional Cultures, Analysis of MicroRNA and Putative Target Genes
Published on: April 12, 2015
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Positive feedback loop between Sox2 and Sox6 inhibits neuronal differentiation in the developing central nervous
Kyung Eun Lee1, Jihae Seo, Jiheon Shin
1Department of Life Science, Ewha Womans University, Seoul 120-750, Korea.
Summary
Neural progenitor cell self-renewal is maintained by a Sox2-Sox6 feedback loop. This loop inhibits premature neuronal differentiation, ensuring proper nervous system development.
Area of Science:
- Neuroscience
- Developmental Biology
- Molecular Biology
Background:
- Maintaining neural progenitor cell populations is crucial for nervous system development.
- Sox2 is a key transcription factor promoting neural progenitor cell self-renewal and inhibiting differentiation.
Purpose of the Study:
- To investigate the molecular mechanisms underlying Sox2's role in neural progenitor cell maintenance.
- To identify direct transcriptional targets of Sox2 involved in self-renewal.
Main Methods:
- ChIP-on-chip assay to identify Sox2 direct target genes.
- In vivo expression analysis of Sox6 in neural precursor cells.
- Gain- and loss-of-function experiments for Sox6.
Main Results:
- Sox6 was identified as a direct transcriptional target of Sox2.
- Sox2 positively regulates Sox6 expression in neural progenitor cells.
- Sox6 is required for maintaining Sox2 expression, forming a positive feedback loop.
Conclusions:
- A positive feedback loop exists between Sox2 and Sox6 in neural progenitor cells.
- This Sox2-Sox6 loop is essential for inhibiting premature neuronal differentiation.
- The findings provide insight into the regulation of neural stem cell populations.
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